Midterm Exam #1 | CPTR 105 | March 16th, ’09

Name:

Directions: The midterm consists of two programs that you need to code. You can do this in either Netbeans or just Notepad. The programs will test your Java and general programming skills. Some point to remember:

• Attempt as much as you can. The programs will be graded to whatever degree you attempt them.
• Comment as much as possbile, specially when you start a task that takes more than one statement to accomplish.
• You may use any resource you would like, as long as it doesn’t breathe.
• When you are done, email me both your programs. Use “CPTR 105 Midterm Exam” for subject line.
  • Email me before 10:15 a.m. Any later and your exam may not be graded.

Program 1

Write a program in which you do all of the following:

1. declare 8 variables belonging to the 8 primitive types (int, short, float, ...) and assign some values in each one. Then print these variables’ values using System.out.println().
2. declare a String variable—call it myString—and store a 15-character string in it (for e.g.,
   "The Golden Rule"). Then print out:
   • whether or not the string contains any space characters at the odd positions
   • if the last character is the same as the first
3. Ask the user to input a string. If the length of this string is even, concatenate it to myString in any order, and display the new string; otherwise display a lowercase version of the new string.

Program 2

Write a program that asks the user for the radius of a circle. Store this as a double value in a double variable. Then calculate and print out the area and circumference of the circle. Make sure your output looks like this:

For a circle with radius 12.52, the area is 492.196, and circumference is 78.6256

Note: Area of a circle is π*r*r; circumference is 2*π*r.